语法填空。

      阅读下面短文，按照句子结构的语法性、上下文的连贯性或相应的要求，在空格处填入

一个适当的词。

     Millions of words have been said about young people in the United States. There are reasons (1) ____ this

great interest in their ideas, (2)_____ (feel) and actions. Today there are about eight million Americans in the

colleges and universities. The young people under twenty-five (3) _____ up nearly half of the American

population, many of (4) __ will be in power in the near future. (5) ____ (nature), their ideas are important to

everyone in the country, and (6)_____ is necessary for the older people to understand (7)_____ they think and

feel. College students today have strong opinions about right and(8) . They are deeply interested in making a

(9) ___ (good) life for all the people, (10) e____for those who have never been given a fair chance before.